Divisibility Problem 3

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  • Abhishek Kumar

    May 19th, 2019

Divisibility Problem 2

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  • Abhishek Kumar

    May 19th, 2019

  • Saheli Saha May 19th, 2019

    (c) 9

    Saminur Rahaman May 19th, 2019

    (d) None of the above

Divisibility Problem 1

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  • Abhishek Kumar

    May 19th, 2019

Permutations Combinations Problem 11

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  • Abhishek Kumar

    Apr 1st, 2019

  • Priyangshu Pramanick Apr 2nd, 2019

    Answer is (10!)/2...which is same as (a)

Prime Number Problem 23

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  • Abhishek Kumar

    Mar 10th, 2019

Algebra Problem

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  • Abhishek Kumar

    Mar 10th, 2019

Prime Number Problem 21

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  • Abhishek Kumar

    Mar 24th, 2019

  • Priyangshu Pramanick Mar 10th, 2019

    false for 5 which is greater than 3

Model Answer:

A prime number (>3) can only be of the forms 6k+1 or 6k+5. 

Let n=6k+1

But then n+2=6k+3, a composite number divisible by 3

Let n=6k+5

But then n+4=6k+9, a composite number divisible by 3

Thus, the given statement is false.

Prime Number Problem 14

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  • Abhishek Kumar

    Jan 20th, 2019

Permutations Combinations Problem 10

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  • Abhishek Kumar

    Sep 9th, 2018

  • Aman Kumar Trivedi Feb 4th, 2019

    B

    Priyangshu Pramanick Mar 10th, 2019

    I am afraid that only 3 rectangles could be inscribed within it...so (d)

Number Theory Problem 40

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  • Abhishek Kumar

    Aug 19th, 2018